Earlier: The talented actor's career spanned decades, starting in the '70s until the 2010s. While he may be best remembered for his roles on TV series like, Barney Miller , and Firefly, he also voiced characters in some of your favorite '90s/early '00s cartoons — and you may not have even known it. Remember Susie Carmichael's dad, Randy, on Rugrats and its subsequent spin-off, All Grown Up? Or the talking baby on The Proud Family? You can thank Glass for those memorable voices.

But beyond cartoons and the aforementioned shows, Glass has been a staple in pop culture for the past 40+ years. He made cameos on everything from Friends to The Twilight Zone to All In The Family to Star Trek: Voyager. In 1982, Glass was nominated for an Emmy for Outstanding Supporting Actor in a Comedy or Variety or Musical Series for his work on Barney Miller.

When news broke about his death, the tributes began pouring in on social media — from fellow celebrities, co-stars, and TV series that he starred on. And likely this is just the beginning.

If you can, celebrate Glass' life this weekend by remembering some of his best work — whether that means re-watching the short-lived series Firefly (available on Netflix) for the millionth time, or experiencing it for the first. Glass certainly left his mark on Hollywood and will be greatly missed.